Check-List
When this style is set, check boxes or radio buttons are automatically shown before the List-Box items, allowing the user to easily select one or more rows.
Only one column is allowed, so Display-Columns is ignored.
The Selection-Mode property allows you to switch between single selection and multiple selection.
 
Example - Define a list-box checked:
screen section.
...
  03 screen-1-lbc-1 List-Box
     line 5.7
     column 3.1
     size 34.6 cells 
     lines 15.5 cells 
     id 1
     check-list
     .